roguelike-game/src/inventory_system/remove_system.rs

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use ::specs::prelude::*;
use crate::components::{Equipped, InBackpack, WantsToRemoveItem};
pub struct ItemRemoveSystem {}
impl<'a> System<'a> for ItemRemoveSystem {
#[allow(clippy::type_complexity)]
type SystemData = (
Entities<'a>,
WriteStorage<'a, WantsToRemoveItem>,
WriteStorage<'a, Equipped>,
WriteStorage<'a, InBackpack>,
);
fn run(&mut self, data: Self::SystemData) {
let (entities, mut wants_remove, mut equipped, mut backpack) = data;
for (entity, to_remove) in (&entities, &wants_remove).join() {
equipped.remove(to_remove.item);
backpack
.insert(to_remove.item, InBackpack { owner: entity })
.expect("Unable to remove item and put in backpack");
}
wants_remove.clear();
}
}